Roll, E. (1956). A history of economic thought. Prentice-Hall.
Chicago-čujuhus (17. p.)Roll, Erich. A History of Economic Thought. Englewood Cliffs, N. J: Prentice-Hall, 1956.
MLA-čujuhus (9. p.)Roll, Erich. A History of Economic Thought. Prentice-Hall, 1956.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.